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Combining Data from multiple tables

I'm trying to create a new master table by combining data from two tables (or more). As an example, I'm trying to combine Table A & Table B below into Table A-B as the result:

Basically both table A & B have similar column in "start" & "end" but different range for each row. What I'm trying to do is to combine the segments from starting distance 1 to 20 from both table and combine them into table A-B. 

Any idea on how to do this through either scripting or the Tables functions ?

Data TableScriptingRe: Combining Data from multiple tables

This can give an idea how you could do this with scripting:

 

Names Default To Here(1);

dt1 = New Table("Table A",
 Add Rows(4),
 Compress File When Saved(1),
 New Column("Start",
  Numeric,
  "Continuous",
  Format("Best", 12),
  Set Values([1, 5, 10, 15])
 ),
 New Column("End",
  Numeric,
  "Continuous",
  Format("Best", 12),
  Set Values([5, 10, 15, 20])
 ),
 New Column("Name", Character, "Nominal", Set Values({"A", "B", "C", "D"}))
);

dt2 = New Table("Table B",
 Add Rows(5),
 Compress File When Saved(1),
 New Column("Start",
  Numeric,
  "Continuous",
  Format("Best", 12),
  Set Values([1, 4, 8, 12, 16])
 ),
 New Column("End",
  Numeric,
  "Continuous",
  Format("Best", 12),
  Set Values([4, 8, 12, 16, 20])
 ),
 New Column("Name",
  Character,
  "Nominal",
  Set Values({"X1", "X2", "X3", "X4", "X5"})
 )
);

//create collection table
dt_final = New Table("Table A-B",
 Compress File When Saved(1),
 New Column("Start", Numeric, "Continuous", Format("Best", 12)),
 New Column("End", Numeric, "Continuous", Format("Best", 12)),
 New Column("Name", Character, "Nominal")
);

For Each Row(dt1,
 startVal = Column(dt1, "Start")[Row()];
 endVal = Column(dt1, "End")[Row()];
 nameVal = Column(dt1, "Name")[Row()];
 r_dt2 = dt2 << get rows where(startVal <= :Start <= endVal | startVal <= :End <= endVal);
 For(i = 1, i <= N Items(r_dt2), i++,
  newEnd = Min(Column(dt2, "End")[r_dt2[i]], endVal);
  newName = nameVal || " " ||Column(dt2, "Name")[r_dt2[i]];
  newRow = EvalList({startVal, newEnd, newName});
  dt_final << Add rows({Start = newRow[1], End = newRow[2], Name = newRow[3]});
  startVal = newEnd;
  endVal= Max(Column(dt2, "End")[r_dt2[i]], endVal);
 );
);

Close(dt1, no save);
Close(dt2, no save);

Re: Combining Data from multiple tables

You can also tackle this with JSL's version of a table-lookup, using Loc Sorted().

 

Cheers,

Brady

 

Names Default To Here( 1 );

dt1 = New Table( "Table A",
 Add Rows( 4 ),
 Compress File When Saved( 1 ),
 New Column( "Start", Numeric, "Continuous", Format( "Best", 12 ), Set Values( [1, 5, 10, 15] ) ),
 New Column( "End", Numeric, "Continuous", Format( "Best", 12 ), Set Values( [5, 10, 15, 20] ) ),
 New Column( "Name", Character, "Nominal", Set Values( {"A", "B", "C", "D"} ) )
);

dt2 = New Table( "Table B",
 Add Rows( 5 ),
 Compress File When Saved( 1 ),
 New Column( "Start", Numeric, "Continuous", Format( "Best", 12 ), Set Values( [1, 4, 8, 12, 16] ) ),
 New Column( "End", Numeric, "Continuous", Format( "Best", 12 ), Set Values( [4, 8, 12, 16, 20] ) ),
 New Column( "Name", Character, "Nominal", Set Values( {"X1", "X2", "X3", "X4", "X5"} ) )
);

//////////// Begin processing here...
ends = Matrix( Associative Array( Concat( As List( dt1:End << get values ), As List( dt2:End << get values ) ) ) << get keys );
starts = [1] |/ ends[1 :: (N Row( ends ) - 1)];
dt3 = As Table( starts || ends, <<COLUMN names=""></COLUMN>

Re: Combining Data from multiple tables

@jthi & @brady_brady Thanks for the responses. I'm sure the solutions provided work but I want to digest them first and I'll respond back here if they meet my intent. Appreciate the help! Keep you posted.